public class HelloWorld {
public static void main(String[] args) {
//写单行注释
/*
中间写多行注释/
/**
* .,:,,, .::,,,::.
* .::::,,;;, .,;;:,,....:i:
* :i,.::::,;i:. ....,,:::::::::,.... .;i:,. ......;i.
* :;..:::;::::i;,,:::;:,,,,,,,,,,..,.,,:::iri:. .,:irsr:,.;i.
* ;;..,::::;;;;ri,,,. ..,,:;s1s1ssrr;,.;r,
* :;. ,::;ii;:, . ................... .;iirri;;;,,;i,
* ,i. .;ri:. ... ............................ .,,:;:,,,;i:
*